I'm having a hard time finding information about whether implementing ipv6 or using a stretched vlan is a better option for geographically dispersed sites is better. Does anyone know:
- Problems with stretched vlans (mac address broadcasting etc)
- costs for devices to solve those problems
- pros for using IPv6 instead
EDIT. What I am looking for is pros and cons against implementing the equipment required to implement stretched IPv4 vlans vs simply using IPv6 to solve the same problems. Eg admins stretch vlans instead of route because protocol X can't be routed, but IPv6 can encapsulate protocol X so there is no need to worry about that problem.
Edit 2: Lets say that one of the problems to be solved is migrating VMs across physical datacenters, Will IPv6 solve the problem of needing to stretch the vlan?
I am looking for a detailed explanation of which project will provide the most bang for the buck as well as reduce network complexity. So far the answers have centered around them as if they are not related (which I see as them being related as IPv6 removes vlan requirements entirely- making it extremely difficult to implement any vlan stretching infrastructure) - but have the same requirements of supporting multiple datacenters in a dispersed environment. All of my providers support IPv6 and we'll probably get a provider independent /48 (if we go that route)